JP2019085163A - Foldable container - Google Patents

Abstract

To provide a foldable container that prevents deformation of a side-wall part in a stacked state and enables smooth slide stack.SOLUTION: A foldable container 1 comprises: a bottom-wall locking parts 38, 39 projecting downward from an outer-periphery corresponding part 34 of a bottom-wall composing part 2 so as to form a gap between a support part 37 of the bottom-wall composing part 2 and these locking parts; and a side-wall locking parts 31, 32 that are inserted between the bottom-wall locking parts 38, 39 of the upper foldable container 1 and the support part 37 when set up foldable containers 1 are stacked. The long side-wall locking part 31 extends in a lateral direction of a long side-wall part 6. The foldable container further comprises: a slide auxiliary projection 41 that comes into contact with the upper face of the long side-wall locking part 31 of the lower foldable container 1 in a case where a foldable container 1 placed on the set up foldable container 1 is displaced in the lateral direction of the long side-wall part 6; and an accommodating recess 44 in which the slide auxiliary projection 41 of the upper foldable container 1 is accommodated in a case where set up foldable containers 1 are stacked.SELECTED DRAWING: Figure 1

Description

本発明は、物品の運搬等に使用される折畳み容器に関するものである。   BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a folding container used for carrying articles and the like.

従来、物品の運搬等に使用される容器として、略矩形状をなす底壁部、及び、該底壁部の各側辺部に沿ってそれぞれ上方に突出する土台部を具備する底壁構成部と、各土台部に対してそれぞれ回動可能に連結された側壁部とを備え、上方に開口する箱型に組立可能に構成されるとともに、各側壁部を底壁部の上方に倒して折畳むことのできる折畳み容器が知られている。   Heretofore, as a container used for transporting articles etc., a bottom wall structure portion comprising a substantially rectangular bottom wall portion and a base portion projecting upward along each side of the bottom wall portion. And a side wall portion rotatably connected to each base portion and configured to be able to be assembled in a box shape opening upward, and the side wall portions are folded over the bottom wall portion to be folded. A collapsible folding container is known.

また、折畳み容器には、折畳み容器同士を安定的に積み重ねる（段積みする）ことができるように構成されているものもある。より具体的には、底壁部に対し、組立状態にある折畳み容器を段積みした場合には、上側の折畳み容器の底壁構成部のうち外周側の部位（以下、「外周対応部」と称する）が、下側の折畳み容器の側壁部の上辺部に当接して支持されるようになっている。さらに、底壁部は、外周対応部よりも内周側の部位から下方に突出する支持部を備えている。そして、組立状態にある折畳み容器を段積みした場合には、上側の折畳み容器の支持部が、下側の折畳み容器の側壁部の内周側に挿入される（略嵌合する）ように構成されている。   In addition, some of the folding containers are configured to be able to stably stack (stack) the folding containers. More specifically, when folding containers in the assembled state are stacked on the bottom wall portion, a portion on the outer peripheral side of the bottom wall constituting portion of the upper folding container (hereinafter referred to as “peripheral corresponding portion” Is supported by being in contact with the upper side of the side wall of the lower folding container. Furthermore, the bottom wall portion is provided with a support portion that protrudes downward from a portion on the inner peripheral side relative to the outer peripheral corresponding portion. Then, when stacking the folded containers in the assembled state, the support portion of the upper folded container is configured to be inserted (substantially fitted) to the inner peripheral side of the side wall portion of the lower folded container. It is done.

さらに、相対する一対の長辺側側壁部の上辺部から上方に突出し、当該長辺側側壁部の横幅方向に沿って延在する側壁側係止部を設ける一方で、底壁部の長側辺部に対応する外周対応部から下方に突出する底壁側係止部を支持部との間に隙間が形成されるようにして設けるといった技術がある（例えば、特許文献１等参照。）。かかる折畳み容器を組立て状態として段積みした場合には、上側の折畳み容器の底壁側係止部と、支持部との間の隙間に、下側の折畳み容器の側壁側係止部が挿入される。これにより、上側の折畳み容器の底壁側係止部と、支持部とによって、下側の折畳み容器の側壁側係止部の変位が規制されることとなり、下側の折畳み容器の側壁部が折畳み容器の内外周方向に傾倒変位したり、変形したりしてしまうといった事態を抑止することができる。   Furthermore, while providing a side wall side locking portion that protrudes upward from the upper side portion of the pair of opposite long side side wall portions and extends along the lateral width direction of the long side side wall portions, the long side of the bottom wall portion There is a technique in which a bottom wall side locking portion projecting downward from an outer peripheral corresponding portion corresponding to a side portion is provided such that a gap is formed between the bottom wall side locking portion and the support portion (see, for example, Patent Document 1). When stacking such folded containers in the assembled state, the side wall side locking portion of the lower folded container is inserted into the gap between the bottom wall side locking portion of the upper folded container and the support portion. Ru. Thus, the displacement of the side wall side locking portion of the lower folding container is regulated by the bottom wall side locking portion of the upper folding container and the support portion, and the side wall portion of the lower folding container is It is possible to prevent a situation such as tilting and displacement or deformation in the inner and outer peripheral directions of the folding container.

また、折畳み容器の段積み作業に際して、組立状態にある折畳み容器に対し、その上側に載せた折畳み容器の水平方向における相対位置が、長辺側側壁部の横幅方向においてずれる場合がある。この場合、上側に載せた折畳み容器を、下側の折畳み容器の側壁部の上辺部に滑らせるようにして、相対位置が合致するまでスライドさせる（スライドスタックする）といったことが行われる。このとき、上記のように、上側の折畳み容器の底壁側係止部と、支持部との間の隙間に、下側の折畳み容器の側壁側係止部が挿入された状態とされることにより、スライドスタックをよりスムースかつ確実に行うことができるようになっている。   In addition, when stacking the folding containers, the relative position in the horizontal direction of the folding container placed on the upper side of the folding container in the assembled state may be shifted in the lateral width direction of the long side wall portion. In this case, the foldable container placed on the upper side is slid on the upper side of the side wall portion of the lower foldable container so that the relative position is matched (slide stacking). At this time, as described above, the side wall side locking portion of the lower folding container is inserted into the gap between the bottom wall side locking portion of the upper folding container and the support portion. Thus, the slide stack can be performed more smoothly and reliably.

特開２００１−３３５０２９号公報JP 2001-335029 A

ところで、上記特許文献１の折畳み容器の短辺側側壁部には、側壁側係止部が設けられていないことから、折畳み容器を組立て状態として段積みした場合に、短辺側側壁部が折畳み容器の内外周方向に傾倒変位したり、変形したりしてしまうといった事態が懸念される。   By the way, since the side wall side locking part is not provided in the short side wall part of the folding container of the above-mentioned patent documents 1, when stacking a folding container in an assembled state, the short side wall part is folded There is a concern that the container may be tilted and displaced or deformed in the inner and outer peripheral directions of the container.

これに対し、短辺側側壁部にも側壁側係止部を設けるとともに、当該側壁側係止部に対応する底壁側係止部を設けることも考えられる。しかし、この場合には、上記のようなスライドスタックが行い難くなってしまうことが懸念される。   On the other hand, it is also conceivable to provide a side wall side locking portion also in the short side wall portion and to provide a bottom wall side locking portion corresponding to the side wall side locking portion. However, in this case, there is a concern that the above-described slide stacking will be difficult to perform.

本発明は、上記例示した問題点等を解決するためになされたものであって、その目的は、段積み状態における側壁部の変形を防止するとともに、スライドスタックをスムースに実行可能とする折畳み容器を提供することにある。   The present invention has been made to solve the above-described problems and the like, and its object is to prevent the deformation of the side wall portion in the stacked state, and to allow the slide stack to be smoothly implemented. To provide.

以下、上記目的等を解決するのに適した各手段につき項分けして説明する。なお、必要に応じて対応する手段に特有の作用効果等を付記する。   In the following, each means suitable for solving the above object and the like will be described by item. In addition, specific effects and the like are added to the corresponding means as needed.

手段１．平面視略矩形状をなす底壁部、前記底壁部の相対する一対の第１側辺部に沿ってそれぞれ上方に突出する第１土台部、及び、前記底壁部の相対する一対の第２側辺部に沿ってそれぞれ上方に突出する第２土台部を具備する底壁構成部と、
前記各第１土台部に対してそれぞれ回動変位可能に連結された第１側壁部と、
前記各第２土台部に対してそれぞれ回動変位可能に連結された第２側壁部とを備え、
前記各第１側壁部、及び、前記各第２側壁部が、それぞれ前記第１土台部、及び、前記第２土台部の上方に立設される起立位置と、前記底壁部の上方に寝かされる寝かせ位置との間を回動変位可能に構成された折畳み容器において、
全ての前記側壁部を前記起立位置とさせた組立状態にある折畳み容器同士を上下に積み重ね可能に構成され、
前記各第１側壁部は、当該第１側壁部の上辺部から上方に突出し、当該第１側壁部の横幅方向に沿って延在する第１側壁側係止部を備え、
前記各第２側壁部は、当該第２側壁部の上辺部から上方に突出する第２側壁側係止部を備え、
前記底壁部は、当該底壁部のうち前記組立状態にある前記折畳み容器同士を積み重ねた場合に下側の前記折畳み容器の前記側壁部の上辺部に当接して支持される部位である外周対応部よりも内周側の部位から下方に突出する支持部を備え、
前記底壁構成部は、
前記外周対応部のうち前記第１土台部の下方に位置する第１外周対応部において、前記支持部との間に隙間が形成されるようにして前記第１外周対応部から下方に突出する第１底壁側係止部と、
前記外周対応部のうち前記第２土台部の下方に位置する第２外周対応部において、前記支持部との間に隙間が形成されるようにして前記第２外周対応部から下方に突出する第２底壁側係止部とを備え、
前記組立状態にある折畳み容器同士を積み重ねた場合に、上側の折畳み容器の前記第１底壁側係止部と、前記支持部との間の隙間に、下側の折畳み容器の前記第１側壁側係止部が挿入され、かつ、上側の折畳み容器の前記第２底壁側係止部と、前記支持部との間の隙間に、下側の折畳み容器の前記第２側壁側係止部が挿入される構成であって、
前記底壁構成部は、前記第１外周対応部から下方に突出するスライド補助突起を備え、
前記第１側壁側係止部には、前記組立状態にある折畳み容器同士を積み重ねた場合に、上側の折畳み容器の前記スライド補助突起が収容される収容凹部が設けられ、
組立状態にある折畳み容器に対し、その上側に載せた折畳み容器の水平方向における相対位置が、前記第１側壁部の横幅方向においてずれた場合においても、上側の折畳み容器の前記第１底壁側係止部と、前記支持部との間の隙間に、下側の折畳み容器の前記第１側壁側係止部が挿入された状態とされるとともに、
組立状態にある折畳み容器に対し、その上側に載せた折畳み容器の水平方向における相対位置が、前記第１側壁部の横幅方向においてずれた場合に、上側の折畳み容器の前記スライド補助突起が、下側の折畳み容器の前記第１側壁側係止部の上面に当接状態とされることを特徴とする折畳み容器。 Means 1. A bottom wall portion having a substantially rectangular shape in plan view, a first base portion projecting upward along a pair of opposing first side portions of the bottom wall portion, and a pair of opposing first portions of the bottom wall portion A bottom wall component having a second base portion projecting upward along the two side portions;
A first side wall portion connected rotatably and movably to each of the first base portions;
And a second side wall portion rotatably and movably connected to each of the second base portions,
An erected position in which the first side wall portion and the second side wall portion are provided upright above the first base portion and the second base portion, and the upper side of the bottom wall portion In the folding container configured to be able to pivot between the lying position and
The folding containers in the assembled state in which all the side wall portions are in the standing position can be stacked up and down;
Each of the first side wall portions includes a first side wall side locking portion that protrudes upward from the upper side portion of the first side wall portion and extends along the lateral width direction of the first side wall portion,
Each of the second side wall portions includes a second side wall side locking portion projecting upward from an upper side portion of the second side wall portion,
The bottom wall portion is an outer periphery which is a portion that is supported by coming into contact with the upper side portion of the side wall portion of the lower side folding container when the folding containers in the assembled state are stacked among the bottom wall portions. A supporting portion projecting downward from a portion on the inner circumferential side of the corresponding portion,
The bottom wall component is
In a first outer peripheral corresponding portion located below the first base portion among the outer peripheral corresponding portions, a gap is formed between the first outer peripheral corresponding portion and the support portion so as to project downward from the first outer peripheral corresponding portion 1 bottom wall side locking part,
A second outer peripheral corresponding portion positioned below the second base portion among the outer peripheral corresponding portions, and a projection is formed downward from the second outer peripheral corresponding portion so that a gap is formed between the second outer peripheral corresponding portion and the support portion; And 2 bottom wall side locking portion,
When stacking the folding containers in the assembled state, the first side wall of the lower folding container is formed in a gap between the first bottom wall side locking portion of the upper folding container and the support portion. The side locking portion is inserted, and the second side wall side locking portion of the lower foldable container is formed in the gap between the second bottom wall side locking portion of the upper foldable container and the support portion Is a configuration into which
The bottom wall forming portion includes a slide assisting projection which protrudes downward from the first outer peripheral corresponding portion,
The first side wall side locking portion is provided with an accommodating recess in which the slide assisting projection of the upper folding container is accommodated when the folding containers in the assembled state are stacked.
The first bottom wall side of the upper folded container, even when the relative position in the horizontal direction of the folded container placed on the upper side with respect to the folded container in the assembled state is shifted in the lateral width direction of the first side wall portion. The first side wall side locking portion of the lower foldable container is inserted into the gap between the locking portion and the support portion.
When the relative position in the horizontal direction of the folding container placed on the upper side with respect to the folding container in the assembled state is shifted in the lateral width direction of the first side wall portion, the slide assisting projection of the upper folding container is lower A folded container characterized in that it is brought into contact with the upper surface of the first side wall side locking portion of the side folded container.

手段１によれば、折畳み容器同士を上下に積み重ねる（段積みする）作業に際して、組立状態にある折畳み容器に対し、その上側に載せた折畳み容器の水平方向における相対位置が、第１側壁部の横幅方向においてずれた場合であっても、上側の折畳み容器の第１底壁側係止部と、支持部との間の隙間に、下側の折畳み容器の第１側壁側係止部が挿入された状態とされることにより、上側に載せた折畳み容器を、下側の折畳み容器の第１側壁部の上辺部に滑らせるようにして、相対位置が合致するまで比較的スムース、かつ、確実にスライドさせる（スライドスタックする）ことができる。   According to the means 1, in the operation of stacking (stacking) the folding containers one another up and down, relative position in the horizontal direction of the folding container placed on the upper side with respect to the folding container in the assembled state is Even when the widthwise direction is shifted, the first side wall side locking portion of the lower side folding container is inserted into the gap between the first bottom wall side locking portion of the upper side folding container and the support portion. In this condition, the upper side of the lower side folding container is slid on the upper side of the lower side folding container, so that the relative position is relatively smooth and reliable. Can slide on (slide stack).

また、組立状態にある折畳み容器を段積みした場合には、上側の折畳み容器の第１底壁側係止部と、支持部との間の隙間に、下側の折畳み容器の第１側壁側係止部が挿入され、かつ、上側の折畳み容器の第２底壁側係止部と、支持部との間の隙間に、下側の折畳み容器の第２側壁側係止部が挿入されるようになっている。このため、組立状態にある折畳み容器を段積みした場合に、下側の折畳み容器の第１側壁部、及び、第２側壁部が折畳み容器の内外周方向に傾倒変位したり、変形したりしてしまうといった事態を防止することができ、結果として、折畳み容器の段積み状態の安定化等を図ることができる。   When stacking the folded containers in the assembled state, the first side wall side of the lower folded container is provided in the gap between the first bottom wall side locking portion of the upper folded container and the support portion. The locking portion is inserted, and the second side wall locking portion of the lower foldable container is inserted into the gap between the second bottom wall side locking portion of the upper foldable container and the support portion It is supposed to be. For this reason, when stacking the folded containers in the assembled state, the first side wall portion and the second side wall portion of the lower folded container may be tilted or deformed in the inner and outer peripheral directions of the folded container. As a result, it is possible to achieve stabilization of the stacked state of the folding container and the like.

さらに、本手段１によれば、第１外周対応部において下方に突出するスライド補助突起が設けられ、第１側壁部の横幅方向に沿って折畳み容器をスライドスタックさせる場合には、スライド補助突起が第１側壁側係止部の上面に当接状態とされるようになっている。つまり、第１側壁部の横幅方向に沿って折畳み容器をスライドスタックさせる場合には、最後に、上側の折畳み容器の第２底壁側係止部が、下側の折畳み容器の第２側壁側係止部を乗り越えて、第２側壁側係止部の外面側に位置する必要がある。このとき、上側の折畳み容器のスライド補助突起が、下側の折畳み容器の第１側壁側係止部の上面を摺接することにより、例えば、スライド補助突起が省略されて、上側の折畳み容器の第１外周対応部が、下側の折畳み容器の第１側壁側係止部の上面を摺接する構成に比べ、上側の折畳み容器の第２底壁側係止部を、下側の折畳み容器の第２側壁側係止部に対して、相対的に上方に位置させ易くすることができる。従って、スライドスタックに際して比較的容易に上側の折畳み容器の第２底壁側係止部と、下側の折畳み容器の第２側壁側係止部とを係止させることができ、結果として、段積み作業性の向上を図ることができる。   Furthermore, according to the present means 1, the slide assisting projection is provided in the first outer peripheral corresponding portion so as to protrude downward, and when sliding and stacking the folding container along the lateral width direction of the first side wall, the slide assisting projection is An upper surface of the first side wall locking portion is in contact with the upper surface. That is, when the folded container is slide-stacked along the width direction of the first side wall, finally, the second bottom wall side locking portion of the upper folded container is the second side wall of the lower folded container. It is necessary to get over the locking portion and be positioned on the outer surface side of the second side wall locking portion. At this time, the slide assisting projection of the upper folding container slides on the upper surface of the first side wall side locking portion of the lower folding container, so that, for example, the slide assisting projection is omitted, and the first folding container (1) The second bottom wall side locking portion of the upper folding container is compared with the configuration of the second bottom wall side locking portion of the upper folding container, compared to the configuration in which the outer peripheral corresponding portion slides on the upper surface of the first side wall locking portion The two side wall side locking portions can be easily positioned relatively upward. Therefore, the second bottom wall side locking portion of the upper folding container and the second side wall locking portion of the lower folding container can be relatively easily locked during slide stacking, as a result, Stacking efficiency can be improved.

さらに、スライドスタックを経て、上側の折畳み容器の第２底壁側係止部と、下側の折畳み容器の第２側壁側係止部とが係止状態とされた場合には、スライド補助突起が収容凹部に収容されることとなる。これにより、折畳み容器の段積み状態において、上側の折畳み容器の荷重が基本的にスライド補助突起でしか支持されなくなってしまうといった事態を回避しつつ、上側の折畳み容器の第１底壁側係止部と、支持部との間の隙間に、下側の折畳み容器の第１側壁側係止部が挿入された状態とされ、かつ、上側の折畳み容器の第２底壁側係止部と、支持部との間の隙間に、下側の折畳み容器の第２側壁側係止部が挿入された状態をより確実なものとする（底壁側係止部と、側壁側係止部とのかかり代を十分に確保する）ことができる。   Furthermore, when the second bottom wall side locking portion of the upper folding container and the second side wall locking portion of the lower folding container are locked after passing through the slide stack, the slide assist projection Will be accommodated in the accommodation recess. Thereby, in the stacked state of the folding container, the first bottom wall side locking of the upper folding container is avoided while the situation that the load of the upper folding container is basically only supported by the slide assisting projection is avoided. The first side wall side locking portion of the lower folding container is inserted into the gap between the portion and the support portion, and the second bottom wall side locking portion of the upper folding container; A state in which the second side wall side locking portion of the lower folding container is inserted into the gap between the support portion and the second side wall portion is made more reliable (a bottom wall side locking portion and a side wall side locking portion The cost can be secured enough).

尚、「少なくとも前記スライド補助突起と、前記第１側壁部の側辺部との間に前記第１底壁側係止部が設けられていること」としてもよい。この場合、第１底壁側係止部を設けることでスライドスタックをスムースかつ確実に行うことができるという作用効果がより確実に操作される。   Note that “the first bottom wall side locking portion may be provided between at least the slide assist protrusion and the side portion of the first side wall portion”. In this case, by providing the first bottom wall side locking portion, the effect that the slide stack can be smoothly and reliably performed can be operated more reliably.

手段２．前記第２底壁側係止部は、外側面の下端部を含む部位において、外方に向けて上方に傾斜するスライド補助傾斜面を備えていることを特徴とする手段１に記載の折畳み容器。   Means 2. The folding container according to the means 1, characterized in that the second bottom wall side locking portion includes a slide assisting inclined surface which is inclined upward and outward at a portion including the lower end portion of the outer surface. .

手段２によれば、スライドスタックにおいて、上側の折畳み容器の第２底壁側係止部が下側の折畳み容器の第２側壁側係止部をより乗り越え易くなるようにすることができ、段積み作業性のより一層の向上を図ることができる。   According to the means 2, in the slide stack, the second bottom wall-side locking portion of the upper foldable container can more easily get over the second side wall locking portion of the lower foldable container. It is possible to further improve the stacking workability.

手段３．前記第２底壁側係止部は、内側面の下端部を含む部位において、内方に向けて上方に傾斜する底壁側段バラシ補助傾斜面を備え、
前記第２側壁側係止部は、外側面の上端部を含む部位において、内方に向けて上方に傾斜する側壁側段バラシ補助傾斜面を備えていることを特徴とする手段１又は２に記載の折畳み容器。 Means 3. The second bottom wall side locking portion is provided with a bottom wall side step disassembly assisting inclined surface which inclines upward and upward at a portion including the lower end portion of the inner side surface,
The second side wall side locking portion is provided with a side wall side step separation assistance inclined surface which inclines upward and inward at a portion including the upper end portion of the outer side surface. Description folding container.

手段３によれば、段積みされた折畳み容器のうち、下側の折畳み容器に対して、上側の折畳み容器を第１側壁部の横幅方向にスライドさせて段積み状態を解消する（段バラシする）作業を行う場合に、作業者が上側の折畳み容器の手前側の第２側壁部を若干引き上げつつ作業者側に引っ張る際に、作業者にとって奥側に位置する第２側壁部側の第２底壁側係止部が、下側の折畳み容器の第２側壁側係止部を乗り越え易くなるようにすることができる。従って、段バラシ作業性の向上を図ることができる。   According to the means 3, the upper folding container is slid in the lateral width direction of the first side wall portion with respect to the lower folding container among the stacked folding containers, thereby eliminating the stacked state (disengagement) ) When the operator pulls the second side wall portion on the front side of the upper folding container slightly while pulling up toward the operator, the second side wall portion located on the back side of the operator The bottom wall side locking portion can easily get over the second side wall locking portion of the lower foldable container. Therefore, it is possible to improve the staged workability.

手段４．前記底壁構成部は、前記スライド補助突起に対し前記底壁部の外周側に隣接して、前記スライド補助突起よりも下方に突出するガイド突起を備えていることを特徴とする手段１乃至３のいずれかに記載の折畳み容器。   Means 4. The bottom wall configuration portion includes a guide protrusion that is adjacent to the outer peripheral side of the bottom wall portion with respect to the slide assist protrusion and that protrudes below the slide assist protrusion. Folding container according to any of the above.

手段４によれば、スライドスタックに際し、上側の折畳み容器のスライド補助突起が、下側の折畳み容器の第１側壁側係止部から脱落してしまうといった事態をより確実に防止することができる。   According to the means 4, it is possible to more reliably prevent the slide assist projection of the upper folding container from falling off from the first side wall side locking portion of the lower folding container during slide stacking.

組立状態にある折畳み容器の斜視図である。It is a perspective view of a folding container in an assembled state. 折畳み状態にある折畳み容器の斜視図である。It is a perspective view of a folding container in a folded state. 折畳み容器の部分拡大斜視図である。It is a partially expanded perspective view of a folding container. 折畳み容器の一部断面を含む部分拡大斜視図である。It is a partial enlarged perspective view including a partial cross section of a folding container. 折畳み容器の下面側を示す部分拡大斜視図である。It is a partial enlarged perspective view which shows the lower surface side of a folding container. 組立状態にある折畳み容器を段積みした状態における、下側の折畳み容器の側壁部と、上側の折畳み容器の底壁構成部との位置関係を説明するための部分拡大斜視図である。It is a partially expanded perspective view for demonstrating the positional relationship of the side wall part of a lower side folding container, and the bottom wall structure part of an upper folding container in the state which stacked the folding containers in an assembly state. 段積みされた折畳み容器を示す部分拡大断面図である。It is a partial expanded sectional view which shows the stacked folding container. スライドスタックの過程における、下側の折畳み容器の側壁部と、上側の折畳み容器の底壁構成部との位置関係を説明するための部分拡大斜視図である。It is a partial enlarged perspective view for demonstrating the positional relationship of the side wall part of a lower side folding container, and the bottom wall structure part of an upper folding container in the process of a slide stack. スライドスタックの過程における折畳み容器を示す部分拡大断面図である。It is a partial expanded sectional view which shows the folding container in process of a slide stack. 段バラシの過程における、下側の折畳み容器の側壁部と、上側の折畳み容器の底壁構成部との位置関係を説明するための部分拡大斜視図である。It is a partial enlarged perspective view for demonstrating the positional relationship of the side wall part of a lower side folding container, and the bottom wall structure part of an upper side folding container in the process of step-wise disassembly. 段バラシの過程における折畳み容器を示す部分拡大断面図である。It is a partial expanded sectional view which shows the folding container in process of step | paragraph disintegration. 蓋部材を示す斜視図である。It is a perspective view showing a lid member.

以下に、一実施形態について図面を参照して説明する。図１、図２等に示すように、折畳み容器１は、平面視略矩形状をなす底壁部３と、底壁部３の各長辺部（第１側辺部）に沿って底壁部３からそれぞれ上方に突出する第１土台部としての長辺側土台部４と、底壁部３の各短辺部（第２側辺部）に沿って底壁部３からそれぞれ上方に突出する第２土台部としての短辺側土台部５とを具備する底壁構成部２を備えている。さらに、折畳み容器１は、各長辺側土台部４に対してそれぞれ回動可能に連結された第１側壁部としての長辺側側壁部６と、各短辺側土台部５に対してそれぞれ回動可能に連結された第２側壁部としての短辺側側壁部７とを備えている。本実施形態の底壁構成部２、長辺側側壁部６、及び、短辺側側壁部７は、ポリプロピレンにより構成されている。   Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1 and FIG. 2 etc., the folding container 1 is a bottom wall along a bottom wall 3 having a substantially rectangular shape in a plan view and each long side (first side) of the bottom wall 3. Projecting upward from the bottom wall 3 along the long side base portion 4 as a first base portion projecting upward from the portion 3 and the short sides (second side portions) of the bottom wall 3 And a bottom wall forming portion 2 having a short side supporting portion 5 as a second supporting portion. Furthermore, the folding container 1 is provided for each of the long side wall portions 6 as the first side wall portions rotatably connected to the respective long side base portions 4 and for the respective short side base portions 5. And a short side wall portion 7 as a second side wall portion connected rotatably. The bottom wall structure 2, the long side wall 6, and the short side wall 7 of the present embodiment are made of polypropylene.

長辺側側壁部６、及び、短辺側側壁部７は、それぞれ長辺側土台部４、及び、短辺側土台部５の上方に立設される起立位置と、底壁部３の中央部側に寝かされる寝かせ位置との間を回動変位可能に構成されている。また、図５等に示すように、長辺側土台部４の底壁部３からの突出長は、短辺側土台部５の底壁部３からの突出長よりも長くなっており、図４、図７に示すように、長辺側側壁部６を回動可能に支持するための長辺側軸受部１１の形成位置も、短辺側側壁部７を回動可能に支持するための短辺側軸受部１２の形成位置よりも上方に位置している。さらに、長辺側側壁部６の横幅は、底壁構成部２の長手幅とほぼ同じに構成され、短辺側側壁部７の横幅は、一対の長辺側土台部４間の距離とほぼ同じに構成されている。   The long side wall portion 6 and the short side wall portion 7 respectively have an upright position erected above the long side base portion 4 and the short side base portion 5, and the center of the bottom wall portion 3 It is configured to be capable of rotational displacement between a lying position to be laid on the part side and the lying position. Moreover, as shown in FIG. 5 etc., the protrusion length from the bottom wall part 3 of the long side base part 4 is longer than the protrusion length from the bottom wall part 3 of the short side base part 5, As shown in FIG. 7 and FIG. 7, the forming position of the long side bearing portion 11 for rotatably supporting the long side wall portion 6 is also for rotatably supporting the short side wall portion 7. It is located above the formation position of the short side bearing portion 12. Furthermore, the lateral width of the long side wall 6 is configured to be substantially the same as the longitudinal width of the bottom wall configuration 2, and the lateral width of the short side wall 7 is substantially the same as the distance between the pair of long side bases 4. It is configured the same.

このため、本実施形態では、全ての長辺側側壁部６、及び、短辺側側壁部７が起立位置とされた組立状態にある折畳み容器１を、全ての長辺側側壁部６、及び、短辺側側壁部７が寝かせ位置とされた折畳み状態とする場合には、一対の短辺側側壁部７を先に寝かせ位置へと変位させてから、長辺側側壁部６を寝かせ位置へと変位させる構成となっている。そして、折畳み容器１が折畳み状態とされた場合には、寝かせ位置とされた短辺側側壁部７が底壁部３の上方に重なるとともに、寝かせ位置とされた長辺側側壁部６が短辺側側壁部７の上方に重なるようになっている。   For this reason, in the present embodiment, the folded container 1 in the assembled state in which all the long side wall portions 6 and the short side wall portions 7 are in the erected position is all the long side wall portions 6 and When the short side wall 7 is in the folded position, the pair of short side walls 7 are displaced to the lying position first, and then the long side wall 6 is placed in the lying position. It is configured to be displaced. Then, when the folding container 1 is in the folded state, the short side wall 7 located at the lying position overlaps the upper side of the bottom wall 3 and the long side sidewall 6 formed at the lying position is short. It overlaps with the upper side of the side side wall portion 7.

図２、図４に示すように、長辺側側壁部６には、長辺側土台部４の長辺側軸受部１１に対して回動可能に連結される長辺側ヒンジ部１３が設けられている。長辺側ヒンジ部１３は、長辺側側壁部６の下辺部から下方に突出するヒンジ本体１４と、長辺側側壁部６の横幅方向におけるヒンジ本体１４の両側面の下端部から側方に突出する一対の軸部（図示略）とを備えている。さらに、短辺側側壁部７には、短辺側土台部５の短辺側軸受部１２に対して回動可能に連結される短辺側ヒンジ部１６が設けられている。短辺側ヒンジ部１６についても、ヒンジ本体１７、及び、軸部（図示略）を備えている。   As shown in FIGS. 2 and 4, the long side sidewall 6 is provided with a long side hinge portion 13 rotatably connected to the long side bearing portion 11 of the long side base portion 4. It is done. The long side hinge portion 13 extends laterally from lower end portions of the hinge main body 14 projecting downward from the lower side portion of the long side wall portion 6 and the lower side portions of both side surfaces of the hinge main body 14 in the lateral width direction of the long side wall portion 6 It has a pair of protruding shaft parts (not shown). Furthermore, the short side hinge portion 16 rotatably connected to the short side bearing portion 12 of the short side base portion 5 is provided in the short side wall portion 7. The short side hinge portion 16 also includes a hinge main body 17 and a shaft portion (not shown).

また、図３等に示すように、短辺側側壁部７の外面の両側部には、外方に突出する挿入突起２１が設けられている。これに対し、長辺側側壁部６には、内面の両側部から内方に突出する係止壁２２が設けられるとともに、係止壁２２において、折畳み容器１が組立状態とされた場合に、短辺側側壁部７の挿入突起２１が挿入される挿入孔部２３が設けられている。当該構成により、短辺側側壁部７の外側への傾倒変位が防止されるとともに、長辺側側壁部６と、短辺側側壁部７との間の上下方向における位置ずれが防止されるようになっている。   Moreover, as shown in FIG. 3 etc., the insertion protrusion 21 which protrudes outward is provided in the both sides of the outer surface of the short side wall part 7. As shown in FIG. On the other hand, while the locking wall 22 which protrudes inward from the both sides of an inner surface is provided in the long-side side wall part 6, in the locking wall 22, when the folding container 1 is in the assembled state, An insertion hole 23 into which the insertion protrusion 21 of the short side wall 7 is inserted is provided. With such a configuration, the tilting displacement of the short side wall 7 to the outside is prevented, and the positional deviation between the long side wall 6 and the short side wall 7 in the vertical direction is prevented. It has become.

さらに、短辺側側壁部７の外面側には、短辺側側壁部７の内側への傾倒変位を防止するロック機構２４が設けられている。ロック機構２４は、長辺側側壁部６の各側辺部において出没可能に設けられた左右一対のスライド片２５を備え、折畳み容器１が組立状態とされた場合に、スライド片２５の先端部が、長辺側側壁部６の内面側に設けられた係止凹部（図示略）に挿入されるようになっている。加えて、ロック機構２４は、作業者が操作可能な操作部２６を備え、操作部２６の所定の操作を行うことで、左右一対のスライド片２５がともに係止凹部から抜け出した位置へと変位するようになっている。   Furthermore, a lock mechanism 24 is provided on the outer surface side of the short side wall 7 to prevent the inward tilting displacement of the short side wall 7. The lock mechanism 24 includes a pair of left and right slide pieces 25 provided to be able to protrude and retract on each side of the long side wall 6 and, when the folding container 1 is in the assembled state, the tip of the slide 25 Is inserted into a locking recess (not shown) provided on the inner surface side of the long side wall 6. In addition, the lock mechanism 24 includes the operation unit 26 which can be operated by the operator, and by performing a predetermined operation of the operation unit 26, the lock mechanism 24 is displaced to a position where both the pair of left and right slide pieces 25 are pulled out It is supposed to

また、図１等に示すように、各長辺側側壁部６、及び、各短辺側側壁部７の上部には、長辺側側壁部６及び短辺側側壁部７の厚み方向に貫通し、作業者が手を掛けることのできる持ち手部２７が設けられている。さらに、各持ち手部２７に対応して、各長辺側側壁部６、及び、各短辺側側壁部７の内面側に対し、各長辺側側壁部６、及び、各短辺側側壁部７の内面よりも内側に突出しないように装着され、持ち手部２７を閉塞する持ち手カバー２８が設けられている。持ち手カバー２８は弾性変形可能に構成され、作業者が持ち手部２７に指先を挿入する場合には内側に変形し、指先を持ち手部２７から外した場合に、自らの弾性力により持ち手部２７を閉塞する姿勢に戻るようになっている。   Further, as shown in FIG. 1 and the like, the upper side of each long side wall 6 and each short side wall 7 penetrates in the thickness direction of the long side wall 6 and the short side wall 7. There is provided a handle portion 27 with which the operator can hang his hand. Furthermore, each long side sidewall 6 and each short sidewall with respect to the inner side of each long sidewall 6 and each short sidewall 7 corresponding to each handle 27. A handle cover 28 is provided which is mounted so as not to project inward from the inner surface of the portion 7 and which closes the handle portion 27. The handle cover 28 is configured to be elastically deformable, and is deformed inward when the operator inserts a fingertip into the handle portion 27 and is held by its own elastic force when the fingertip is removed from the handle portion 27. The posture for closing the hand 27 is returned.

尚、一対の短辺側土台部５間の距離は、短辺側側壁部７の高さ（上下幅）の２倍の長さよりも長くなっている。このため、寝かせ位置とされた一対の短辺側側壁部７の高さが揃うようになっている。その一方で、一対の長辺側土台部４間の距離は、長辺側側壁部６の高さ（上下幅）の２倍の長さよりも短くなっている。このため、折畳み容器１を折畳む場合には、一対の長辺側側壁部６のうち一方の長辺側側壁部６を寝かせ位置へと変位させた後、他方の長辺側側壁部６を、既に寝かせ位置とされた一方の長辺側側壁部６の上方に重ねるようにして、寝かせ位置へと変位させる。つまり、一対の長辺側側壁部６は、互いに折り重なるようにして畳まれる。さらに、長辺側軸受部１１は、寝かせ位置にある長辺側側壁部６の長辺側ヒンジ部１３の上下方向における変位を許容するように構成されており、寝かせ位置とされた一対の長辺側側壁部６は、ともに略水平方向に延在するようになっている。   The distance between the pair of short side base portions 5 is longer than twice the height (vertical width) of the short side wall portions 7. For this reason, the heights of the pair of short side wall portions 7 set as the lying position are aligned. On the other hand, the distance between the pair of long side base portions 4 is shorter than twice the height (vertical width) of the long side wall portions 6. For this reason, when folding the folding container 1, after displacing one long side wall portion 6 of the pair of long side wall portions 6 to the lying position, the other long side wall portion 6 is removed. , It is displaced to the lying position so as to be superimposed on one long side sidewall 6 which has already been set to the lying position. That is, the pair of long side wall portions 6 are folded so as to be folded over each other. Furthermore, the long side bearing portion 11 is configured to allow displacement in the vertical direction of the long side hinge portion 13 of the long side wall portion 6 located at the lying position, The side side wall portions 6 are both extended in a substantially horizontal direction.

さて、図１、図３等に示すように、各長辺側側壁部６は、当該長辺側側壁部６の上辺部のうち長辺側側壁部６の内側部位から上方に突出し、当該長辺側側壁部６の横幅方向に沿って延在する第１側壁側係止部としての長側壁側係止部３１を備えている。本実施形態の長側壁側係止部３１は、長辺側側壁部６の横幅方向全体にわたって設けられている。   Now, as shown in FIG. 1 and FIG. 3 etc., each long side wall 6 projects upward from the inner part of the long side wall 6 in the upper side of the long side wall 6, and the length A long side wall side locking portion 31 is provided as a first side wall side locking portion extending along the lateral width direction of the side side wall portion 6. The long side wall side locking portion 31 of the present embodiment is provided over the entire lateral width direction of the long side side wall portion 6.

さらに、各短辺側側壁部７は、当該短辺側側壁部７の上辺部のうち短辺側側壁部７の内側部位から上方に突出し、当該短辺側側壁部７の横幅方向に沿って延在する第２側壁側係止部としての短側壁側係止部３２を備えている。本実施形態の短側壁側係止部３２は、短辺側側壁部７の横幅方向中央部を含む範囲にのみ設けられている。加えて、本実施形態では、短辺側側壁部７の上辺部のうち、短側壁側係止部３２の両側方に隣接する部位等を含む一般部は、短側壁側係止部３２の上面と同じ高さとなっている。さらに、長側壁側係止部３１の上面は、短辺側側壁部７の上辺部（一般部の上面、及び、短辺側係止部３２の上面）と同じ高さとなっている。   Furthermore, each short side wall 7 projects upward from the inner part of the short side wall 7 in the upper side of the short side wall 7, and extends along the width direction of the short side wall 7. A short side wall side locking portion 32 as a second side wall side locking portion extending is provided. The short side wall side locking portion 32 of the present embodiment is provided only in a range including the widthwise center portion of the short side wall portion 7. In addition, in the present embodiment, a general part including the part adjacent to both sides of the short side wall side locking part 32 in the upper side part of the short side wall part 7 is the upper surface of the short side wall side locking part 32 It is the same height as Furthermore, the top surface of the long side wall side locking portion 31 has the same height as the upper side portion of the short side wall portion 7 (the top surface of the general portion and the top surface of the short side side locking portion 32).

また、図４、図５、図６に示すように、底壁部３は、略矩形板状の底板部３３と、底板部３３のうち、組立状態にある折畳み容器１同士を積み重ねた（段積みした）場合に、下側の折畳み容器１の長辺側側壁部６、及び、短辺側側壁部７の上辺部に当接して支持される部位である外周対応部３４（底壁部３のうち上面側において長辺側土台部４及び短辺側土台部５が形成されている部位）よりも内周側の部位から下方に突出する支持部３７とを備えている。支持部３７は、底板部３３から下方に突出するリブが下面視で格子状に設けられることで構成されている。また、図４に示すように、本実施形態の底板部３３のうち外周対応部３４は、その内周側の部位よりも上方に位置するようにして設けられている。尚、図６（及び、後出の図７〜図１１）では、便宜上、上側の折畳み容器１の側壁部６、７の図示を省略している。   Further, as shown in FIGS. 4, 5 and 6, the bottom wall portion 3 is formed by stacking the folding containers 1 in an assembled state among the bottom plate portion 33 and the bottom plate portion 33 having a substantially rectangular plate shape (step (The bottom wall portion 3 is a portion supported in contact with the upper side of the long side wall 6 of the lower folding container 1 and the upper side of the short side wall 7). The support part 37 which protrudes below from the site | part of an inner peripheral side rather than the site | part in which the long side base part 4 and the short side base part 5 are formed in upper surface side among these is provided. The support portion 37 is configured by providing a rib projecting downward from the bottom plate portion 33 in a lattice shape in a bottom view. Moreover, as shown in FIG. 4, the outer peripheral corresponding part 34 is provided so that it may be located above the site | part of the inner peripheral side among the baseplate parts 33 of this embodiment. In addition, in FIG. 6 (and later-appeared FIGS. 7-11), illustration of the side wall parts 6 and 7 of the upper folding container 1 is abbreviate | omitted for convenience.

さらに、図５等に示すように、底壁構成部２は、外周対応部３４のうち長辺側土台部４の下方に位置する第１外周対応部としての長辺側外周対応部３５において、支持部３７との間に隙間が形成されるようにして長辺側外周対応部３５から下方に突出する第１底壁側係止部としての長手底壁側係止部３８と、外周対応部３４のうち短辺側土台部５の下方に位置する第２外周対応部としての短辺側外周対応部３６において、支持部３７との間に隙間が形成されるようにして短辺側外周対応部３６から下方に突出する第２底壁側係止部としての短手底壁側係止部３９とを備えている。尚、本実施形態では、長手底壁側係止部３８の下面と、短手底壁側係止部３９の下面とが同じ高さ位置となっている。   Furthermore, as shown in FIG. 5 and the like, in the bottom wall forming portion 2, in the long side outer circumferential corresponding portion 35 as a first outer circumferential corresponding portion located below the long side base portion 4 in the outer circumferential corresponding portion 34, A longitudinal bottom wall side locking portion 38 as a first bottom wall side locking portion which protrudes downward from the long side peripheral corresponding portion 35 so that a gap is formed between the support portion 37 and an outer peripheral corresponding portion In the short side outer periphery corresponding portion 36 as the second outer periphery corresponding portion located below the short side base portion 5 among 34, a gap is formed between the support portion 37 and the short side outer periphery corresponding portion And a short bottom wall side locking portion 39 as a second bottom wall side locking portion protruding downward from the portion 36. In the present embodiment, the lower surface of the longitudinal bottom wall side locking portion 38 and the lower surface of the short bottom wall side locking portion 39 are at the same height position.

図１、図５に示すように、本実施形態では、長手底壁側係止部３８は、底壁部３の長側辺部の両端部近傍にそれぞれ設けられるとともに、底壁構成部２の外周面と面一となるように底壁部３の長側辺部に沿って設けられている。また、短手底壁側係止部３９は、底壁部３の短側辺部の中央部を含む範囲に設けられるとともに、底壁構成部２の外周面と面一となるように底壁部３の短側辺部に沿って設けられている。   As shown in FIGS. 1 and 5, in the present embodiment, the longitudinal bottom wall side locking portions 38 are provided in the vicinity of both end portions of the long side of the bottom wall portion 3, and It is provided along the long side of the bottom wall 3 so as to be flush with the outer peripheral surface. In addition, the short bottom wall side locking portion 39 is provided in a range including the central portion of the short side portion of the bottom wall 3 and the bottom wall so as to be flush with the outer peripheral surface of the bottom wall configuration portion 2 It is provided along the short side of the part 3.

そして、図６に示すように、組立状態にある折畳み容器１を段積みした場合には、上側の折畳み容器１の長手底壁側係止部３８と、支持部３７（図５、図８参照）との間の隙間に、下側の折畳み容器１の長側壁側係止部３１が挿入されるように構成されている。さらに、図７に示すように、上側の折畳み容器１の短手底壁側係止部３９と、支持部３７との間の隙間に、下側の折畳み容器１の短側壁側係止部３２が挿入されるように構成されている。   Then, as shown in FIG. 6, when stacking the folding containers 1 in the assembled state, the longitudinal bottom wall side locking portion 38 of the upper folding container 1 and the support portion 37 (see FIGS. 5 and 8) And the long-side locking portion 31 of the lower folding container 1 is inserted into the gap between the two. Furthermore, as shown in FIG. 7, in the gap between the short bottom wall side locking portion 39 of the upper folding container 1 and the support portion 37, the short side wall locking portion 32 of the lower folding container 1. Is configured to be inserted.

当該構成により、組立状態にある折畳み容器１の段積み状態において、下側の折畳み容器１の長辺側側壁部６、及び、短辺側側壁部７が折畳み容器１の内外周方向に傾倒変位したり、変形したりすることが抑止される。また、折畳み容器１を段積みする作業に際して、組立状態にある折畳み容器１に対し、その上側に載せた折畳み容器１の水平方向における相対位置が、長辺側側壁部６の横幅方向においてずれた場合であっても（あえて、ずらして載せる場合もある）、図８に示すように、上側の折畳み容器１の長手底壁側係止部３８と、支持部３７との間の隙間に、下側の折畳み容器１の長側壁側係止部３１が挿入された状態とされる。これにより、上側に載せた折畳み容器１を、下側の折畳み容器１の長辺側側壁部６の上辺部に滑らせるようにして、相対位置が合致するまでスライドさせる（スライドスタックする）ことができる。   In the stacked state of the folding container 1 in the assembled state, the long side wall 6 and the short side wall 7 of the lower folding container 1 tilt in the inner and outer peripheral directions of the folding container 1 by the configuration. It is restrained from being deformed or deformed. Further, when stacking the folding containers 1, the relative position in the horizontal direction of the folding containers 1 placed on the upper side of the folding containers 1 in the assembled state is shifted in the lateral width direction of the long side wall portion 6 Even in the case (in some cases, it may be placed in a staggered manner), as shown in FIG. 8, in the gap between the longitudinal bottom wall side locking portion 38 of the upper folding container 1 and the support portion 37, The long side wall side locking portion 31 of the side folding container 1 is inserted. As a result, the foldable container 1 placed on the upper side can be slid to the upper side of the long side wall 6 of the lower foldable container 1 so that the relative position is matched (slide stacking). it can.

また、図５、図８に示すように、本実施形態の底壁構成部２は、長辺側外周対応部３５から下方に突出するスライド補助突起４１と、スライド補助突起４１に対し底壁部３の外周側に隣接して、スライド補助突起４１よりも下方に突出するガイド突起４２とを備えている。スライド補助突起４１は、各長手底壁側係止部３８よりも底壁部３の長側辺部の中央部側に位置するようにして一対で設けられ、各スライド補助突起４１に隣接してガイド突起４２が設けられている。本実施形態では、スライド補助突起４１の下面は、短手底壁側係止部３９の下面よりも若干下方に位置している。さらに、ガイド突起４２は、底壁部３の内外周方向において長手底壁側係止部３８と同様の位置（長辺側土台部４の外面と面一）に設けられるとともに、厚みが長手底壁側係止部３８と同じとなっている。当該構成により、折畳み容器１をスライドスタックさせる際には、少なくとも上側の折畳み容器１のスライド補助突起４１が、下側の折畳み容器１の長側壁側係止部３１の上面に当接状態とされる（ガイド突起４２に案内されつつ長側壁側係止部３１の上面を摺接する）ようになっている。   Further, as shown in FIGS. 5 and 8, in the bottom wall forming portion 2 of the present embodiment, the slide assisting projection 41 protruding downward from the long side outer peripheral corresponding portion 35 and the bottom wall portion relative to the slide assisting projection 41 Adjacent to the outer peripheral side of 3, there is provided a guide projection 42 which protrudes below the slide assist projection 41. The slide assist projections 41 are provided in a pair so as to be positioned closer to the central portion of the long side of the bottom wall 3 than the longitudinal bottom wall side locking portions 38, and adjacent to the slide assist projections 41. Guide projections 42 are provided. In the present embodiment, the lower surface of the slide assisting projection 41 is located slightly below the lower surface of the short bottom wall side locking portion 39. Furthermore, the guide projection 42 is provided at the same position (same as the outer surface of the long side base portion 4) in the inner and outer peripheral direction of the bottom wall portion 3 with the longitudinal bottom wall side locking portion 38 It is the same as the wall side locking portion 38. With this configuration, at the time of sliding and stacking the folding container 1, at least the slide assisting projection 41 of the upper folding container 1 is brought into contact with the upper surface of the long sidewall locking portion 31 of the lower folding container 1. (The upper surface of the long side wall side locking portion 31 is in sliding contact with the guide projection 42 while being guided by the guide projection 42).

さらに、図４、図７等に示すように、短手底壁側係止部３９は、外側面の下端部を含む部位において、外方に向けて上方に傾斜するスライド補助傾斜面４３を備えている。このため、図９に示すように、スライドスタックの最後に、上側の折畳み容器１の短手底壁側係止部３９が、下側の折畳み容器１の短側壁側係止部３２を乗り越える際に、短手底壁側係止部３９と、短側壁側係止部３２とが接触したとしても、スライド補助傾斜面４３により、短手底壁側係止部３９が上方に案内されて、比較的スムースに、上側の折畳み容器１の短手底壁側係止部３９が下側の折畳み容器１の短側壁側係止部３２の外面側に位置するようになっている。   Furthermore, as shown in FIG. 4 and FIG. 7 etc., the short bottom wall side locking portion 39 is provided with a slide assisting inclined surface 43 which is inclined upward and outward at a portion including the lower end portion of the outer surface. ing. For this reason, as shown in FIG. 9, when the short bottom wall side locking portion 39 of the upper folding container 1 passes over the short side wall locking portion 32 of the lower folding container 1 at the end of the slide stack. Even if the short bottom wall side locking portion 39 and the short side wall side locking portion 32 contact, the short bottom wall side locking portion 39 is guided upward by the slide assisting inclined surface 43, In a relatively smooth manner, the short bottom wall side locking portion 39 of the upper folding container 1 is positioned on the outer surface side of the short side wall locking portion 32 of the lower folding container 1.

さらに、図１、図８等に示すように、長辺側側壁部６の上辺部には、組立状態にある折畳み容器１を段積みした場合に、上側の折畳み容器１のスライド補助突起４１が収容される収容凹部４４が設けられている。このため、組立状態にある折畳み容器１の段積みが完了した場合には、図６に示すように、上側の折畳み容器１のスライド補助突起４１と、下側の折畳み容器１の長側壁側係止部３１の上面とが当接する状態が解消され、長辺側側壁部６の横幅方向全域にわたり、下側の折畳み容器１の長側壁側係止部３１の上面と、上側の折畳み容器１の底壁部３（長辺側外周対応部３５）とが当接する。さらには、上側の折畳み容器１の全ての長手底壁側係止部３８の内側面が、下側の折畳み容器１の長側壁側係止部３１の外側面と当接、又は、近接するようになっている。尚、折畳み容器１の短辺側についても、下側の折畳み容器１の短側壁側係止部３２の上面と、上側の折畳み容器１の底壁部３（短辺側外周対応部３６）とが当接するようになっている。   Furthermore, as shown in FIG. 1 and FIG. 8 etc., when the folding containers 1 in the assembled state are stacked in layers, the slide assisting projection 41 of the upper folding container 1 is on the upper side of the long side wall 6. An accommodating recess 44 is provided to be accommodated. For this reason, when stacking of the foldable containers 1 in the assembled state is completed, as shown in FIG. 6, the slide assisting projection 41 of the upper foldable container 1 and the long sidewall engagement of the lower foldable container 1 The state in which the upper surface of the stopper 31 abuts is eliminated, and the upper surface of the long sidewall engaging portion 31 of the lower folding container 1 and the upper folding container 1 are eliminated over the entire widthwise direction of the long sidewall 6. The bottom wall 3 (long side outer peripheral corresponding portion 35) abuts. Furthermore, the inner side surfaces of all the longitudinal bottom wall side locking portions 38 of the upper side folding container 1 abut or come close to the outer side surface of the long side wall side locking portions 31 of the lower side folding container 1. It has become. In addition, also on the short side of the folding container 1, the upper surface of the short side wall side locking portion 32 of the lower folding container 1 and the bottom wall 3 (short side outer peripheral corresponding portion 36) of the upper folding container 1 Is supposed to abut.

また、図４、図７等に示すように、短手底壁側係止部３９は、内側面の下端部を含む部位において、内方に向けて上方に傾斜する底壁側段バラシ補助傾斜面４５を備えている。さらに、短側壁側係止部３２は、外側面の上端部を含む部位において、内方に向けて上方に傾斜する側壁側段バラシ補助傾斜面４６を備えている。例えば、図１０に示すように、段積みされた折畳み容器１のうち、下側の折畳み容器１に対して、上側の折畳み容器１を長辺側側壁部６の横幅方向にスライドさせて段積み状態を解消する（段バラシする）作業を行う場合には、作業者が上側の折畳み容器１の手前側の短辺側側壁部７を若干引き上げつつ作業者側に引っ張ることに伴い、作業者にとって奥側に位置する短辺側側壁部７側の短手底壁側係止部３９が、下側の折畳み容器１の短側壁側係止部３２を折畳み容器１の内側に乗り越える必要がある。このとき、図１１に示すように、短手底壁側係止部３９と、短側壁側係止部３２とが接触したとしても、底壁側段バラシ補助傾斜面４５、及び、側壁側段バラシ補助傾斜面４６により、短手底壁側係止部３９が上方に案内されて、比較的スムースに、上側の折畳み容器１の短手底壁側係止部３９が下側の折畳み容器１の短側壁側係止部３２の内面側に位置するようになっている。   In addition, as shown in FIG. 4 and FIG. 7 etc., the short bottom wall side locking portion 39 is a bottom wall side step disassembly assisting slope that inclines upward toward the inside at a portion including the lower end portion of the inner side. The surface 45 is provided. Furthermore, the short side wall side locking portion 32 is provided with a side wall side step separation assistance inclined surface 46 which inclines upward toward the upper side at a portion including the upper end portion of the outer side surface. For example, as shown in FIG. 10, the upper folding container 1 is slid in the lateral width direction of the long side wall portion 6 with respect to the lower folding container 1 of the stacked folding containers 1 and stacked. In order to cancel the state (step separation), the operator pulls toward the operator while pulling up the short side wall 7 on the front side of the upper folding container 1 slightly. It is necessary for the short bottom wall side locking portion 39 on the short side wall portion 7 side located at the back side to get over the short side wall locking portion 32 of the lower folding container 1 to the inside of the folding container 1. At this time, as shown in FIG. 11, even if the short bottom wall side locking portion 39 and the short side wall side locking portion 32 come in contact with each other, the bottom wall side step isolation assisting inclined surface 45 and the side wall side step The short bottom wall side locking portion 39 is guided upward by the loosely assisted inclined surface 46, and the short bottom wall side locking portion 39 of the upper folding container 1 is relatively smooth, and the lower folding container 1 It is located in the inner surface side of the short side wall side latching | locking part 32 of.

尚、図５等に示すように、本実施形態の底壁構成部２は、一対のスライド補助突起４１の間、及び、各スライド補助突起４１と、当該各スライド補助突起４１から底壁部３の長側辺部の両端部側へ所定距離離れた位置との間において、長辺側外周対応部３５から下方へ突出する補助脚部４７を備えている。補助脚部４７は、長手底壁側係止部３８と同様に底壁部３の長側辺部に沿って設けられるとともに、長辺側外周対応部３５から下方への突出長、及び、厚みが長手底壁側係止部３８と同じとなっている。組立状態にある折畳み容器１を段積みした場合、図６に示すように、上側の折畳み容器１の補助脚部４７は、長手底壁側係止部３８と同様に、下側の折畳み容器１の長側壁側係止部３１の外側面と当接、又は、近接するように構成されている。   As shown in FIG. 5 and the like, the bottom wall forming portion 2 of the present embodiment is formed between the pair of slide assist projections 41, each slide assist projection 41, and each slide assist projection 41 to the bottom wall 3 An auxiliary leg 47 which protrudes downward from the long side outer peripheral corresponding portion 35 is provided between the end portions of the long side portion and a position separated by a predetermined distance from each other. The auxiliary leg 47 is provided along the long side of the bottom wall 3 in the same manner as the long bottom wall side locking portion 38 and has a length and a thickness protruding downward from the long side outer peripheral corresponding portion 35, and Is the same as the longitudinal bottom wall side locking portion 38. When stacking the foldable containers 1 in the assembled state, as shown in FIG. 6, the auxiliary leg 47 of the upper foldable container 1 is the lower foldable container 1 like the longitudinal bottom wall side locking portion 38. It is comprised so that the outer surface of the long side wall side latching | locking part 31 may be contact | abutted or adjoined.

また、本実施形態では、図１２に示すような蓋部材５１を折畳み容器１に装着可能に構成されている。蓋部材５１は、平面視略矩形状の天壁部５２と、天壁部５２の外周縁から下方に突出する略四角枠状の外周壁部５３とを備えている。そして、組立状態にある折畳み容器１に対し蓋部材５１を被せた場合に、長辺側側壁部６の長側壁側係止部３１の外側面に対して蓋部材５１の外周壁部５３が当接、又は、近接するように構成されている。上記のように、本実施形態では、長側壁側係止部３１が長辺側側壁部６の横幅方向全体に設けられており、蓋部材５１の外周壁部５３を、長側壁側係止部３１の外方、かつ、長辺側側壁部６の上辺部の上方に位置させることができる。特に、本実施形態では、折畳み容器１の長辺側側壁部６の外面、及び、蓋部材５１の外周壁部５３の外面が略面一とされるようになっている。尚、本実施形態の蓋部材５１はポリプロピレンにより構成されている。   Further, in the present embodiment, the lid member 51 as shown in FIG. 12 is configured to be attachable to the foldable container 1. The lid member 51 includes a top wall 52 having a substantially rectangular shape in a plan view, and an outer peripheral wall 53 having a substantially square frame shape projecting downward from the outer peripheral edge of the top wall 52. Then, when the lid member 51 is put on the folded container 1 in the assembled state, the outer peripheral wall portion 53 of the lid member 51 is in contact with the outer surface of the long side wall side locking portion 31 of the long side wall portion 6. They are configured to be in contact with or close to each other. As described above, in the present embodiment, the long side wall side locking portion 31 is provided in the entire lateral width direction of the long side side wall portion 6, and the outer peripheral wall portion 53 of the lid member 51 It can be positioned outside 31 and above the upper side of the long side wall 6. In particular, in the present embodiment, the outer surface of the long side wall portion 6 of the folding container 1 and the outer surface of the outer peripheral wall portion 53 of the lid member 51 are substantially flush. The lid member 51 of the present embodiment is made of polypropylene.

以上詳述したように、本実施形態によれば、折畳み容器１を段積みする作業に際して、組立状態にある折畳み容器１に対し、その上側に載せた折畳み容器１の水平方向における相対位置が、長辺側側壁部６の横幅方向においてずれた場合であっても、上側の折畳み容器１の長手底壁側係止部３８と、支持部３７との間の隙間に、下側の折畳み容器１の長側壁側係止部３１が挿入された状態とされる。これにより、上側に載せた折畳み容器１を、下側の折畳み容器１の長辺側側壁部６の上辺部に滑らせるようにして、相対位置が合致するまで比較的スムース、かつ、確実にスライドスタックさせることができる。   As described above in detail, according to the present embodiment, the horizontal relative position of the folding container 1 placed on the upper side with respect to the folding container 1 in the assembled state at the time of stacking the folding containers 1 is Even when the long side wall portion 6 is shifted in the width direction, the lower side folding container 1 is formed in the gap between the longitudinal bottom wall side locking portion 38 of the upper folding container 1 and the support portion 37. The long side wall side locking portion 31 is inserted. As a result, the foldable container 1 placed on the upper side is slid on the upper side of the long side wall 6 of the lower foldable container 1 so that the relative position is relatively smooth and reliably slid. It can be stuck.

また、組立状態にある折畳み容器１を段積みした場合には、上側の折畳み容器１の長手底壁側係止部３８と、支持部３７との間の隙間に、下側の折畳み容器１の長側壁側係止部３１が挿入され、かつ、上側の折畳み容器１の短手底壁側係止部３９と、支持部３７との間の隙間に、下側の折畳み容器１の短側壁側係止部３２が挿入されるようになっている。このため、組立状態にある折畳み容器１を段積みした場合に、下側の折畳み容器１の長辺側側壁部６、及び、短辺側側壁部７が折畳み容器１の内外周方向に傾倒変位したり、変形したりしてしまうといった事態を防止することができ、結果として、折畳み容器１の段積み状態の安定化等を図ることができる。   In addition, when stacking the folding containers 1 in the assembled state, in the gap between the longitudinal bottom wall side locking portion 38 of the upper folding container 1 and the support portion 37, the lower folding container 1 is The long side wall side locking portion 31 is inserted, and the short side wall side of the lower side folding container 1 in the gap between the short bottom wall side side locking portion 39 of the upper folding container 1 and the support portion 37 The locking portion 32 is to be inserted. Therefore, when stacking the folding containers 1 in the assembled state, the long side wall 6 and the short side wall 7 of the lower folding container 1 tilt in the inner and outer peripheral directions of the folding container 1. It is possible to prevent a situation in which the container is deformed or deformed, and as a result, it is possible to stabilize the stacked state of the folding container 1 or the like.

さらに、本実施形態によれば、長辺側外周対応部３５において下方に突出するスライド補助突起４１が設けられ、長辺側側壁部６の横幅方向に沿って折畳み容器１をスライドスタックさせる場合には、スライド補助突起４１が長側壁側係止部３１の上面に当接状態とされるようになっている。つまり、長辺側側壁部６の横幅方向に沿って折畳み容器１をスライドスタックさせる場合には、最後に、短手底壁側係止部３９が、短側壁側係止部３２を乗り越えて、短側壁側係止部３２の外面側に位置する必要がある。このとき、上側の折畳み容器１のスライド補助突起４１が、下側の折畳み容器１の長側壁側係止部３１の上面を摺接することにより、例えば、スライド補助突起４１が省略されて、上側の折畳み容器１の長辺側外周対応部３５（底板部３３の下面）が、下側の折畳み容器１の長側壁側係止部３１の上面を摺接する構成に比べ、上側の折畳み容器１の短手底壁側係止部３９を、下側の折畳み容器１の短側壁側係止部３２に対して、相対的に上方に位置させ易くすることができる。従って、スライドスタックに際して比較的容易に上側の折畳み容器１の短手底壁側係止部３９と、下側の折畳み容器１の短側壁側係止部３２とを係止させることができ、結果として、段積み作業性の向上を図ることができる。   Furthermore, according to the present embodiment, the slide assisting projection 41 that protrudes downward in the long side outer peripheral corresponding portion 35 is provided, and the stacked container 1 is slide-stacked along the width direction of the long side wall 6. The slide assist projection 41 is brought into contact with the upper surface of the long side wall locking portion 31. That is, when the folded container 1 is slide-stacked along the width direction of the long-side wall portion 6, finally, the short bottom wall-side locking portion 39 passes over the short sidewall-side locking portion 32, It needs to be located on the outer surface side of the short side wall side locking portion 32. At this time, the slide assisting projection 41 of the upper folding container 1 is in sliding contact with the upper surface of the long sidewall side locking portion 31 of the lower folding container 1, so that the sliding assist projection 41 is omitted, for example. Compared with the configuration in which the long side outer periphery corresponding portion 35 (the lower surface of the bottom plate portion 33) of the folding container 1 slides on the upper surface of the long side locking portion 31 of the lower folding container 1, the upper folding container 1 has a short length. The hand bottom wall side locking portion 39 can be easily positioned relatively upward to the short side wall side locking portion 32 of the lower foldable container 1. Therefore, it is possible to relatively easily lock the short bottom wall side locking portion 39 of the upper folding container 1 and the short side wall locking portion 32 of the lower folding container 1 in slide stacking relatively easily. As a result, stacking work can be improved.

さらに、スライドスタックを経て、上側の折畳み容器１の短手底壁側係止部３９と、下側の折畳み容器１の短側壁側係止部３２とが係止状態とされた場合には、スライド補助突起４１が収容凹部４４に収容されることとなる。これにより、折畳み容器１の段積み状態において、上側の折畳み容器１の荷重が基本的にスライド補助突起４１でしか支持されなくなってしまうといった事態を回避しつつ、上側の折畳み容器１の長手底壁側係止部３８と、支持部３７との間の隙間に、下側の折畳み容器１の長側壁側係止部３１が挿入された状態とされ、かつ、上側の折畳み容器１の短手底壁側係止部３９と、支持部３７との間の隙間に、下側の折畳み容器１の短側壁側係止部３２が挿入された状態をより確実なものとする（長手底壁側係止部３８、及び、短手底壁側係止部３９と、長側壁側係止部３１、及び、短側壁側係止部３２とのかかり代を十分に確保する）ことができる。   Furthermore, when the short bottom wall side locking portion 39 of the upper folding container 1 and the short side wall locking portion 32 of the lower folding container 1 are locked after passing through the slide stack, The slide assist projection 41 is accommodated in the accommodation recess 44. Thereby, the longitudinal bottom wall of the upper folding container 1 is avoided while avoiding the situation where the load of the upper folding container 1 is basically only supported by the slide assisting projection 41 in the stacked state of the folding container 1. The long side wall side locking portion 31 of the lower folding container 1 is inserted into the gap between the side locking portion 38 and the support portion 37, and the short bottom of the upper folding container 1 A state in which the short side wall side locking portion 32 of the lower folding container 1 is inserted into the gap between the wall side locking portion 39 and the support portion 37 is made more secure (longitudinal bottom wall side engagement It is possible to sufficiently secure the engagement portions between the locking portion 38 and the short bottom wall side locking portion 39, the long side wall side locking portion 31, and the short side wall side locking portion 32).

また、短手底壁側係止部３９は、外側面の下端部を含む部位において、外方に向けて上方に傾斜するスライド補助傾斜面４３を備えている。このため、スライドスタックにおいて、上側の折畳み容器１の短手底壁側係止部３９が下側の折畳み容器１の短側壁側係止部３２をより乗り越え易くなるようにすることができ、段積み作業性のより一層の向上を図ることができる。   Further, the short bottom wall side locking portion 39 is provided with a slide assisting inclined surface 43 which is inclined upward and outward at a portion including the lower end portion of the outer side surface. For this reason, in the slide stack, the short bottom wall side locking portion 39 of the upper folding container 1 can more easily get over the short side wall locking portion 32 of the lower folding container 1. It is possible to further improve the stacking workability.

さらに、短手底壁側係止部３９は、内側面の下端部を含む部位において、内方に向けて上方に傾斜する底壁側段バラシ補助傾斜面４５を備え、短側壁側係止部３２は、外側面の上端部を含む部位において、内方に向けて上方に傾斜する側壁側段バラシ補助傾斜面４６を備えている。このため、段積みされた折畳み容器１のうち、下側の折畳み容器１に対して、上側の折畳み容器１を長辺側側壁部６の横幅方向にスライドさせて段バラシする作業を行う場合に、作業者が上側の折畳み容器１の手前側の短辺側側壁部７を若干引き上げつつ作業者側に引っ張る際に、作業者にとって奥側に位置する短辺側側壁部７側の短手底壁側係止部３９が、下側の折畳み容器１の短側壁側係止部３２を乗り越え易くなるようにすることができる。従って、段バラシ作業性の向上を図ることができる。   Furthermore, the short bottom wall side locking portion 39 is provided with a bottom wall side step dissection auxiliary inclined surface 45 which inclines upward and inward at a portion including the lower end portion of the inner side surface, and the short side wall side locking portion At a portion including the upper end portion of the outer side surface 32, the side wall side step insulation support inclined surface 46 which is inclined upward and upward is provided. For this reason, in the case where the upper folding container 1 is slid in the lateral width direction of the long-side wall portion 6 with respect to the lower folding container 1 of the stacked folding containers 1 to carry out a step separation operation. When the worker pulls toward the worker while pulling up the short side wall 7 on the front side of the upper folding container 1 slightly, the short bottom of the short side wall 7 located on the back side for the worker The wall side locking portion 39 can easily get over the short side wall side locking portion 32 of the lower foldable container 1. Therefore, it is possible to improve the staged workability.

加えて、底壁構成部２には、各スライド補助突起４１に対し底壁部３の外周側に隣接して、スライド補助突起４１よりも下方に突出するガイド突起４２が設けられている。このため、スライドスタック（或いは上記のような上段の折畳み容器１を左右方向にスライドさせての段バラシ作業）に際し、上側の折畳み容器１のスライド補助突起４１が、下側の折畳み容器１の長側壁側係止部３１から脱落してしまうといった事態をより確実に防止することができる。   In addition, the bottom wall configuration portion 2 is provided with a guide protrusion 42 that protrudes below the slide assist protrusion 41 adjacent to the outer peripheral side of the bottom wall portion 3 with respect to each slide assist protrusion 41. For this reason, in the case of the slide stack (or the step disassembly operation by sliding the upper-stage folded container 1 in the left-right direction as described above), the slide assisting projection 41 of the upper folded container 1 It is possible to more reliably prevent the situation where the side wall side locking portion 31 falls off.

尚、上記実施形態の記載内容に限定されず、例えば次のように実施してもよい。勿論、以下において例示しない他の応用例、変更例も当然可能である。   In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other applications and modifications not illustrated below are naturally possible.

（ａ）上記実施形態では、短側壁側係止部３２においてスライド補助傾斜面４３、及び、底壁側段バラシ補助傾斜面４５が設けられ、短側壁側係止部３２において側壁側段バラシ補助傾斜面４６が設けられているが、これらを適宜省略することも可能である。さらに、上記実施形態では、各スライド補助突起４１に隣接してガイド突起４２が設けられているが、ガイド突起４２を省略することも可能である。   (A) In the above embodiment, the slide assisting inclined surface 43 and the bottom wall side step disproportionation assisting inclined surface 45 are provided in the short side wall side locking portion 32, and the side wall side step disproportionation assistance is provided Although the inclined surface 46 is provided, it is also possible to omit these suitably. Furthermore, in the above embodiment, the guide projections 42 are provided adjacent to the slide assist projections 41, but the guide projections 42 may be omitted.

（ｂ）上記実施形態では、短手底壁側係止部３９の下面が、スライド補助突起４１の下面よりも若干上方に位置しているが、短手底壁側係止部３９の下面が、スライド補助突起４１の下面よりも下方に位置したり、同じ高さ位置とされたりすることとしてもよい。すなわち、スライド補助突起４１が設けられる場合には、スライド補助突起４１が設けられない場合に比べ、スライドスタックに際して、上側の折畳み容器１の短手底壁側係止部３９の高さ位置を、下側の折畳み容器１の短側壁側係止部３２に対して相対的に上方に位置させ易くすることができる。従って、スライドスタックに際して、上側の折畳み容器１の短手底壁側係止部３９が、下側の折畳み容器１の短側壁側係止部３２を乗り越え易くなるといった作用効果が奏される。勿論、補助脚部４７の下面が、短手底壁側係止部３９の下面がよりも下方に位置することにより、かかる作用効果がより顕著に奏されることとなる。   (B) In the above embodiment, the lower surface of the short bottom wall side locking portion 39 is positioned slightly above the lower surface of the slide assisting projection 41, but the lower surface of the short bottom wall side locking portion 39 is Alternatively, they may be positioned lower than the lower surface of the slide assist projection 41 or may be at the same height position. That is, when the slide assisting projection 41 is provided, the height position of the short bottom wall side engaging portion 39 of the upper folding container 1 is set at slide stacking, as compared with the case where the slide assisting projection 41 is not provided. It can be made easy to position relatively upwards with respect to the short side wall side latching | locking part 32 of the lower side folding container 1. FIG. Therefore, at the time of slide stacking, the short bottom wall side locking portion 39 of the upper folding container 1 can easily get over the short side wall locking portion 32 of the lower folding container 1. Of course, when the lower surface of the auxiliary leg portion 47 is positioned lower than the lower surface of the short bottom wall side locking portion 39, such effects can be more remarkably exhibited.

（ｃ）上記実施形態では、折畳み容器１に蓋部材５１を被せた場合に、蓋部材５１の外周壁部５３が、長辺側側壁部６の外面よりも外方に突出しないようにするために、長辺側側壁部６の横幅方向全体にわたって長側壁側係止部３１を設けることとしているが、折畳み容器１の段積みが完了する前にスライドスタックが途中で規制されてしまうといった事態を回避可能に構成されていればよい。例えば、長側壁側係止部３１は、折畳み容器１を段積みした場合に、上側の折畳み容器１の長手底壁側係止部３８のうち長辺側側壁部６の両側辺部にそれぞれ近い一対の長手底壁側係止部３８が配置される部位の間の範囲に連続して設けられていることとしてもよい。   (C) In the above embodiment, when the lid 51 is put on the folding container 1, the outer peripheral wall 53 of the lid 51 does not protrude outward beyond the outer surface of the long side wall 6. In addition, the long side wall side locking portion 31 is provided over the entire width direction of the long side side wall portion 6, but the slide stack may be restricted halfway before the stacking of the folding container 1 is completed. It should just be comprised so that avoidance is possible. For example, when stacking the folding containers 1 in a stack, the long side wall side locking portions 31 are respectively close to both side portions of the long side wall portion 6 among the longitudinal bottom wall side locking portions 38 of the upper folding container 1. It may be provided continuously in the range between the portions where the pair of longitudinal bottom wall side locking portions 38 are arranged.

（ｄ）上記実施形態では、一対の短辺側側壁部７を先に寝かせ位置とした後、一対の長辺側側壁部６を寝かせ位置とするように構成されているが、一対の長辺側側壁部６を先に寝かせ位置とした後、一対の短辺側側壁部７を寝かせ位置とするような構成としてもよい。さらに、上記実施形態では、寝かせ位置とされた一対の短辺側側壁部７の高さ位置が揃っている一方で、寝かせ位置とされた一対の長辺側側壁部６同士が上下に重なり合うように構成されているが、例えば、寝かせ位置とされた短辺側側壁部７同士が上下に重なり合うように構成してもよいし、寝かせ位置とされた長辺側側壁部６の高さ位置が揃うように構成してもよい。   (D) In the above embodiment, after the pair of short side wall portions 7 is set to the lying position first, the pair of long side wall portions 6 is set to the lying position. After setting the side wall portion 6 to the lying position first, the pair of short side wall portions 7 may be set to the lying position. Furthermore, in the above embodiment, while the height positions of the pair of short side wall portions 7 positioned at the lying position are aligned, the pair of long side sidewall portions 6 positioned at the lying position are vertically overlapped. However, for example, the short side wall portions 7 located at the lying position may be vertically overlapped, or the height position of the long side wall portions 6 located at the lying position may be set. It may be configured to be aligned.

（ｅ）上記実施形態において、長手底壁側係止部３８を底壁部３の長側辺部の中央部側に延長させるような格好で、補助脚部４７と連結されるように構成してもよい。尚、補助脚部４７は、長手底壁側係止部３８と同様に底壁部３の長側辺部に沿って設けられるとともに、外周対応部３４から下方への突出長が長手底壁側係止部３８と同じとなっている。当該構成を採用する場合、折畳み容器１を段積みした状態の安定化や、長手底壁側係止部３８等の耐久性の向上等を図るといった作用効果がより一層奏される。尚、本実施形態の長手底壁側係止部３８は、基本的に、折畳み容器１をスライドスタックさせる際に下側の折畳み容器１の長側壁側係止部３１の外面側に略係止状態とされる部位（スライドスタックの安定化に寄与する部位）を意図している。   (E) In the above embodiment, the long bottom wall side locking portion 38 is connected to the auxiliary leg 47 in such a manner that the long bottom wall side locking portion 38 is extended to the central side of the long side of the bottom wall 3 May be The auxiliary leg 47 is provided along the long side of the bottom wall 3 in the same manner as the long bottom wall side locking portion 38, and the length of the downward protrusion from the outer peripheral corresponding portion 34 is the long bottom wall It is the same as the locking portion 38. When the said structure is employ | adopted, the effect of achieving stabilization of the state which piled up the folding container 1 and improvement in durability of the longitudinal bottom wall side latching | locking part 38 grade | etc., Is exhibited more. The longitudinal bottom wall side locking portion 38 of the present embodiment is basically locked to the outer surface side of the long sidewall side locking portion 31 of the lower folding container 1 when the folding container 1 is slide-stacked. The site to be considered (site that contributes to the stabilization of the slide stack) is intended.

（ｆ）上記実施形態の折畳み容器１、及び、蓋部材５１はポリプロピレンにより構成されているが、ポリエチレン、ＰＥＴ、ポリアミド等その他の樹脂材料により構成されることとしてもよい。   (F) Although the folding container 1 of the said embodiment and the cover member 51 are comprised with polypropylene, it is good also as being comprised with other resin materials, such as polyethylene, PET, a polyamide.

１…折畳み容器、２…底壁構成部、３…底壁部、４…長辺側土台部、５…短辺側土台部、６…長辺側側壁部、７…短辺側側壁部、３１…長側壁側係止部、３２…短側壁側係止部、３３…底壁部、３４…外周対応部、３５…長辺側外周対応部、３６…短辺側外周対応部、３７…支持部、３８…長手底壁側係止部、３９…短手底壁側係止部、４１…スライド補助突起、４２…ガイド突起、４３…スライド補助傾斜面、４４…収容凹部、４５…底壁側段バラシ補助傾斜面、４６…側壁側段バラシ補助傾斜面。   DESCRIPTION OF SYMBOLS 1 ... folding container, 2 ... bottom wall structure part, 3 ... bottom wall part, 4 ... long side base part, 5 ... short side base part, 6 ... long side side wall part, 7 ... short side side wall part, 31: long side wall side locking portion, 32: short side wall side locking portion, 33: bottom wall portion, 34: outer peripheral corresponding portion, 35: long side outer peripheral corresponding portion, 36: short side outer peripheral corresponding portion, 37: Support portion 38 Longitudinal bottom wall side locking portion 39 Short bottom wall side locking portion 41 Slide assist projection 42 Guide projection 43 Slide assist inclined surface 44 Containing recess 45 Bottom Wall side step disassembly auxiliary slope, 46 ... Side wall side disassembly aid slope.

Claims (3)

平面視略矩形状をなす底壁部、前記底壁部の相対する一対の第１側辺部に沿ってそれぞれ上方に突出する第１土台部、及び、前記底壁部の相対する一対の第２側辺部に沿ってそれぞれ上方に突出する第２土台部を具備する底壁構成部と、
前記各第１土台部に対してそれぞれ回動変位可能に連結された第１側壁部と、
前記各第２土台部に対してそれぞれ回動変位可能に連結された第２側壁部とを備え、
前記各第１側壁部、及び、前記各第２側壁部が、それぞれ前記第１土台部、及び、前記第２土台部の上方に立設される起立位置と、前記底壁部の上方に寝かされる寝かせ位置との間を回動変位可能に構成された折畳み容器において、
全ての前記側壁部を前記起立位置とさせた組立状態にある折畳み容器同士を上下に積み重ね可能に構成され、
前記各第１側壁部は、当該第１側壁部の上辺部から上方に突出し、当該第１側壁部の横幅方向に沿って延在する第１側壁側係止部を備え、
前記各第２側壁部は、当該第２側壁部の上辺部から上方に突出する第２側壁側係止部を備え、
前記底壁部は、当該底壁部のうち前記組立状態にある前記折畳み容器同士を積み重ねた場合に下側の前記折畳み容器の前記側壁部の上辺部に当接して支持される部位である外周対応部よりも内周側の部位から下方に突出する支持部を備え、
前記底壁構成部は、
前記外周対応部のうち前記第１土台部の下方に位置する第１外周対応部において、前記支持部との間に隙間が形成されるようにして前記第１外周対応部から下方に突出する第１底壁側係止部と、
前記外周対応部のうち前記第２土台部の下方に位置する第２外周対応部において、前記支持部との間に隙間が形成されるようにして前記第２外周対応部から下方に突出する第２底壁側係止部とを備え、
前記組立状態にある折畳み容器同士を積み重ねた場合に、上側の折畳み容器の前記第１底壁側係止部と、前記支持部との間の隙間に、下側の折畳み容器の前記第１側壁側係止部が挿入され、かつ、上側の折畳み容器の前記第２底壁側係止部と、前記支持部との間の隙間に、下側の折畳み容器の前記第２側壁側係止部が挿入される構成であって、
前記底壁構成部は、前記第１外周対応部から下方に突出するスライド補助突起を備え、
前記第１側壁側係止部には、前記組立状態にある折畳み容器同士を積み重ねた場合に、上側の折畳み容器の前記スライド補助突起が収容される収容凹部が設けられ、
組立状態にある折畳み容器に対し、その上側に載せた折畳み容器の水平方向における相対位置が、前記第１側壁部の横幅方向においてずれた場合においても、上側の折畳み容器の前記第１底壁側係止部と、前記支持部との間の隙間に、下側の折畳み容器の前記第１側壁側係止部が挿入された状態とされるとともに、
組立状態にある折畳み容器に対し、その上側に載せた折畳み容器の水平方向における相対位置が、前記第１側壁部の横幅方向においてずれた場合に、上側の折畳み容器の前記スライド補助突起が、下側の折畳み容器の前記第１側壁側係止部の上面に当接状態とされることを特徴とする折畳み容器。 A bottom wall portion having a substantially rectangular shape in plan view, a first base portion projecting upward along a pair of opposing first side portions of the bottom wall portion, and a pair of opposing first portions of the bottom wall portion A bottom wall component having a second base portion projecting upward along the two side portions;
A first side wall portion connected rotatably and movably to each of the first base portions;
And a second side wall portion rotatably and movably connected to each of the second base portions,
An erected position in which the first side wall portion and the second side wall portion are provided upright above the first base portion and the second base portion, and the upper side of the bottom wall portion In the folding container configured to be able to pivot between the lying position and
The folding containers in the assembled state in which all the side wall portions are in the standing position can be stacked up and down;
Each of the first side wall portions includes a first side wall side locking portion that protrudes upward from the upper side portion of the first side wall portion and extends along the lateral width direction of the first side wall portion,
Each of the second side wall portions includes a second side wall side locking portion projecting upward from an upper side portion of the second side wall portion,
The bottom wall portion is an outer periphery which is a portion that is supported by coming into contact with the upper side portion of the side wall portion of the lower side folding container when the folding containers in the assembled state are stacked among the bottom wall portions. A supporting portion projecting downward from a portion on the inner circumferential side of the corresponding portion,
The bottom wall component is
In a first outer peripheral corresponding portion located below the first base portion among the outer peripheral corresponding portions, a gap is formed between the first outer peripheral corresponding portion and the support portion so as to project downward from the first outer peripheral corresponding portion 1 bottom wall side locking part,
A second outer peripheral corresponding portion positioned below the second base portion among the outer peripheral corresponding portions, and a projection is formed downward from the second outer peripheral corresponding portion so that a gap is formed between the second outer peripheral corresponding portion and the support portion; And 2 bottom wall side locking portion,
When stacking the folding containers in the assembled state, the first side wall of the lower folding container is formed in a gap between the first bottom wall side locking portion of the upper folding container and the support portion. The side locking portion is inserted, and the second side wall side locking portion of the lower foldable container is formed in the gap between the second bottom wall side locking portion of the upper foldable container and the support portion Is a configuration into which
The bottom wall forming portion includes a slide assisting projection which protrudes downward from the first outer peripheral corresponding portion,
The first side wall side locking portion is provided with an accommodating recess in which the slide assisting projection of the upper folding container is accommodated when the folding containers in the assembled state are stacked.
The first bottom wall side of the upper folded container, even when the relative position in the horizontal direction of the folded container placed on the upper side with respect to the folded container in the assembled state is shifted in the lateral width direction of the first side wall portion. The first side wall side locking portion of the lower foldable container is inserted into the gap between the locking portion and the support portion.
When the relative position in the horizontal direction of the folding container placed on the upper side with respect to the folding container in the assembled state is shifted in the lateral width direction of the first side wall portion, the slide assisting projection of the upper folding container is lower A folded container characterized in that it is brought into contact with the upper surface of the first side wall side locking portion of the side folded container. 前記第２底壁側係止部は、外側面の下端部を含む部位において、外方に向けて上方に傾斜するスライド補助傾斜面を備えていることを特徴とする請求項１に記載の折畳み容器。   The fold according to claim 1, wherein the second bottom wall side locking portion is provided with a slide assisting inclined surface which is inclined upward and outward at a portion including the lower end portion of the outer side surface. container. 前記第２底壁側係止部は、内側面の下端部を含む部位において、内方に向けて上方に傾斜する底壁側段バラシ補助傾斜面を備え、
前記第２側壁側係止部は、外側面の上端部を含む部位において、内方に向けて上方に傾斜する側壁側段バラシ補助傾斜面を備えていることを特徴とする請求項１又は２に記載の折畳み容器。 The second bottom wall side locking portion is provided with a bottom wall side step disassembly assisting inclined surface which inclines upward and upward at a portion including the lower end portion of the inner side surface,
3. The second side wall side locking portion according to claim 1, further comprising: a side wall side step separation assistance inclined surface which inclines upward and inward at a portion including the upper end portion of the outer side surface. Folding container as described in.

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